I have been meaning to post about these Little Wonders, well here they are!
Hands Down the Single Best thing since Sliced Bread when it comes to Heavy Gauge Wiring! Relay Jumpers, multi-taps for Battery terminals, Shifter Jumpers, etc. Cut the plastic off, widen the wire opening, solder and shrink wrap. Then connect your next 10g wire with another spade connector, plug in and there is your 2x10g connection. No more PITA splicing of 2 wires into one connector! And at 22 cents a piece you just can't beat it.

Yeah, Go figure I found these while re-stocking after building those "36v Relay Kits" wiped out my inventory. These would have saved me a lot of time, there where like 24ea 10g 2-wire Splices into a single spade connector in those kits!